Electrochemistry questions
1808 published questions with worked solutions.
- Based on the data below, the correct order of reducing power is: Fe^ 3+ (aq)+e^- Fe^ 2+ (aq), E^ =+0.77 V; Al^ 3+ (aq)+3e^- Al...
- Which are used as secondary reference electrodes?
- Which defines the standard reduction electrode potential of Zn^ 2+ ions?
- 10^ -2 g-atom of Ag can be oxidised to Ag^+ during the electrolysis of AgNO_3 solution using a silver electrode by
- If current is passed into a solution of an electrolyte
- Which is the correct representation for the Nernst equation?
- Al_2O_3 is reduced by electrolysis at low potentials and high currents. If 4.0 10^4 amperes of current is passed through molten...
- It is impossible to measure the actual voltage (potential) of any single half-cell by itself because
- An indicator electrode is
- The reaction at the cathode during the electrolysis of an aqueous solution of NaCl in a Nelson cell is
- Which process involves corrosion?
- The atomic weight of Al is 27. When a current corresponding to 5 faradays is passed through a solution of Al^ 3+ ions, the weight...
- A certain quantity of electricity is passed through aqueous solutions of AgNO_3 and CuSO_4 connected in series. If Ag (at. wt....
- Deduce from the following E^ values of half-cells what combination of two half-cells would give the cell with the largest...
- Standard reduction potentials for Zn^ 2+ /Zn , Ni^ 2+ /Ni and Fe^ 2+ /Fe are -0.76, -0.23 and -0.44 V respectively. The reaction...
- What is the potential of the cell containing two hydrogen electrodes: Pt ; 12 H_2 (g) ,| , H^+ (10^ -8 M) ,|| , H^+ (0.001 M) ,|...
- In an electrolytic cell Ag ,| ,AgNO_3 ,| ,Ag (both electrodes silver), when current is passed, the concentration of AgNO_3
- A cell with two electrodes, one of grey tin and the other of white tin, both dipping in a solution of (NH_4)_2SnCl_6 , showed...
- If a strip of copper metal is placed in a solution of ferrous sulphate,
- Consider the reaction M^ n+ (aq)+ne^- M^0(s). The standard reduction potential values of metals M_1, M_2 and M_3 are -0.34 V,...
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